Machine for butt-welding tubes



(No Model.)

J. OREA.

MACHINE FORBUTT WELDING TUBES. No. 354,102. Patented Dec. 14, 1886.

I /laag I NITED STATES PATENT Fries.

JOHN UREA, OF ALLEGHENY, PENNSYLVANIA.

MACHINE FOR BUTT-WELDING TUBES.

EPECIPICATION forming part of Letters Patent No. 354,102, dated December14, 1886.

Application filed July 27, 1886. Serial No. 200,267. (No model.)

To all whom, it may concern:

Be it known that I, JOHN OREA, a citizen of the United States, residingat Allegheny city, in the county of Allegheny and State of Pennsylvania,have invented certain new and useful Improvements in an Apparatus forButt- Welding Tubing; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothbuttwelding tubing, constructed in accordance with my invention. Fig.2 is an end elevation of the same. Fig. 3 is a diagram of the severalgear-wheels used in rotating the grooved rolls. Fig. 4 is a perspectiveview of a die which may be used in place of the pair of central rolls.

To put my invention into practice, I provide a frame, a, of suitablesize and form of construction, at one end of which I mount on parallelshafts b, secured in suitable. bearings, a, two pairs of grooved rolls,(Z, geared together by toothed wheels f, placed at the opposite end ofthe frame a. Between these two pairs of rolls (2 and at right anglesthereto, I place another pair, 9, of the same size and form ofconstruction, mounted on vertical shafts 71, having bearings i at thetop and base of the frame (4. Above each of these rolls 9, and securedto these vertical shafts h, are toothed wheelsj, the one meshing theother and operated by a gear-wheel, k, mounted on a horizontal shaft, Z,to one end of which is secured an ordinary beltpulley, m. To this sameshaft, 2, I also secure a gear-wheel, n, for operating the toothedwheels f, attached to the shafts b, carrying the vertical rolls (1, aswill be seen by reference to the diagram shown at Fig. 3 on thedrawings. At the front of the groove, in the vertical rolls (2, I placea guidebox, 0, and a suspended scraper orcleaner consisting of ametallic ball, 2, secured to a vertical arm, 1', attached to the framea, which removes the scale from the edges of the tubes while passingthrough the rolls. Each of the horizontal shafts I), carrying the frontvertical rolls d, I provide with a clutch, s, by means of which therolls (2 may be thrown in or out of gear.

I11 operation the blanks for welding are brought to the required degreeof heat, and one endplaced in the guide-box 0 and pressed forward untilcaught and carried through the first pair of rolls (1 into the second(I, and thence through the third and last pair (7, at

which time the tube is welded. 6

In operating my improved machine I may substitute the fixed die t (shownin Fig. 4:) for the rolling dies 9 g; but I prefer these dies, as theyproduce less friction and drag on the ma chine.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s-

In an apparatus such as described, the combination consisting of the twopairs of vertical grooved rolls (1, having a horizontal pair, g, placedbetween and at right angles thereto, the guide-boX 0, the scraping orcleaning device p, and the gear-wheels f j n, for opcrating the rolls,substantially as set forth.

JOHN UREA.

Witnesses:

J AS. E. Cam, 0. 0. LEE.

